Well, that's a problem.

I like how I don't realize these things until someone points them out. ._.

Curious, I looked up all the humanoid main-party characters in the main-series games from Final Fantasy IV to Final Fantasy XII, disregarding characters such as Fran, who is more than fifty years old but looks much younger on account of not being human.

The ages of the male characters ranged from five to seventy.

The ages of the female characters ranged from five to twenty-two. Source.

ALSO, AHHHHHH